diff --git a/arch/arm/configs/micro_fsl_frdm_k64f_defconfig b/arch/arm/configs/micro_fsl_frdm_k64f_defconfig
index 40a5a79a47f..1f1a7d10b47 100644
--- a/arch/arm/configs/micro_fsl_frdm_k64f_defconfig
+++ b/arch/arm/configs/micro_fsl_frdm_k64f_defconfig
@@ -10,7 +10,7 @@ CONFIG_MICROKERNEL=y
 #
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=25000000
-# CONFIG_TICKLESS_KERNEL is not set
+# CONFIG_SYS_CLOCK_EXISTS is not set
 # CONFIG_INIT_STACKS is not set
 # CONFIG_XIP is not set
 # CONFIG_ENHANCED_SECURITY is not set
diff --git a/arch/arm/configs/micro_ti_lm3s6965_defconfig b/arch/arm/configs/micro_ti_lm3s6965_defconfig
index e1b5191f601..51e670fa86b 100644
--- a/arch/arm/configs/micro_ti_lm3s6965_defconfig
+++ b/arch/arm/configs/micro_ti_lm3s6965_defconfig
@@ -10,7 +10,7 @@ CONFIG_MICROKERNEL=y
 #
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=12000000
-# CONFIG_TICKLESS_KERNEL is not set
+# CONFIG_SYS_CLOCK_EXISTS is not set
 # CONFIG_INIT_STACKS is not set
 # CONFIG_XIP is not set
 # CONFIG_ENHANCED_SECURITY is not set
diff --git a/arch/arm/configs/nano_fsl_frdm_k64f_defconfig b/arch/arm/configs/nano_fsl_frdm_k64f_defconfig
index 8366a2ce7d7..8eed0bcdae2 100644
--- a/arch/arm/configs/nano_fsl_frdm_k64f_defconfig
+++ b/arch/arm/configs/nano_fsl_frdm_k64f_defconfig
@@ -10,7 +10,7 @@ CONFIG_NANOKERNEL=y
 #
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=25000000
-# CONFIG_TICKLESS_KERNEL is not set
+# CONFIG_SYS_CLOCK_EXISTS is not set
 # CONFIG_INIT_STACKS is not set
 # CONFIG_XIP is not set
 # CONFIG_ENHANCED_SECURITY is not set
diff --git a/arch/arm/configs/nano_ti_lm3s6965_defconfig b/arch/arm/configs/nano_ti_lm3s6965_defconfig
index 8224ad35fc8..77d0aa8e560 100644
--- a/arch/arm/configs/nano_ti_lm3s6965_defconfig
+++ b/arch/arm/configs/nano_ti_lm3s6965_defconfig
@@ -10,7 +10,7 @@ CONFIG_NANOKERNEL=y
 #
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=12000000
-# CONFIG_TICKLESS_KERNEL is not set
+# CONFIG_SYS_CLOCK_EXISTS is not set
 # CONFIG_INIT_STACKS is not set
 # CONFIG_XIP is not set
 # CONFIG_ENHANCED_SECURITY is not set
diff --git a/arch/arm/defconfig b/arch/arm/defconfig
index 40a5a79a47f..4803698424c 100644
--- a/arch/arm/defconfig
+++ b/arch/arm/defconfig
@@ -10,7 +10,7 @@ CONFIG_MICROKERNEL=y
 #
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=25000000
-# CONFIG_TICKLESS_KERNEL is not set
+CONFIG_SYS_CLOCK_EXISTS=y
 # CONFIG_INIT_STACKS is not set
 # CONFIG_XIP is not set
 # CONFIG_ENHANCED_SECURITY is not set
diff --git a/arch/x86/configs/micro_generic_pc_defconfig b/arch/x86/configs/micro_generic_pc_defconfig
index fe80401c2c9..e1b52f8dbf2 100644
--- a/arch/x86/configs/micro_generic_pc_defconfig
+++ b/arch/x86/configs/micro_generic_pc_defconfig
@@ -10,7 +10,7 @@ CONFIG_MICROKERNEL=y
 #
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=1193180
-# CONFIG_TICKLESS_KERNEL is not set
+CONFIG_SYS_CLOCK_EXISTS=y
 # CONFIG_INIT_STACKS is not set
 # CONFIG_XIP is not set
 CONFIG_ENHANCED_SECURITY=y
diff --git a/arch/x86/configs/micro_quark_defconfig b/arch/x86/configs/micro_quark_defconfig
index e5b1a548e8d..c95dc821ad6 100644
--- a/arch/x86/configs/micro_quark_defconfig
+++ b/arch/x86/configs/micro_quark_defconfig
@@ -10,7 +10,7 @@ CONFIG_MICROKERNEL=y
 #
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=25000000
-# CONFIG_TICKLESS_KERNEL is not set
+CONFIG_SYS_CLOCK_EXISTS=y
 # CONFIG_INIT_STACKS is not set
 # CONFIG_XIP is not set
 CONFIG_ENHANCED_SECURITY=y
diff --git a/arch/x86/configs/nano_generic_pc_defconfig b/arch/x86/configs/nano_generic_pc_defconfig
index 2ca283eb577..5aa3e0e0f57 100644
--- a/arch/x86/configs/nano_generic_pc_defconfig
+++ b/arch/x86/configs/nano_generic_pc_defconfig
@@ -10,7 +10,7 @@ CONFIG_NANOKERNEL=y
 #
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=1193180
-# CONFIG_TICKLESS_KERNEL is not set
+CONFIG_SYS_CLOCK_EXISTS=y
 # CONFIG_INIT_STACKS is not set
 # CONFIG_XIP is not set
 CONFIG_ENHANCED_SECURITY=y
diff --git a/arch/x86/configs/nano_quark_defconfig b/arch/x86/configs/nano_quark_defconfig
index ac657463971..e1eca879966 100644
--- a/arch/x86/configs/nano_quark_defconfig
+++ b/arch/x86/configs/nano_quark_defconfig
@@ -10,7 +10,7 @@ CONFIG_NANOKERNEL=y
 #
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=25000000
-# CONFIG_TICKLESS_KERNEL is not set
+CONFIG_SYS_CLOCK_EXISTS=y
 # CONFIG_INIT_STACKS is not set
 # CONFIG_XIP is not set
 CONFIG_ENHANCED_SECURITY=y